Bivalvia | Ostreoida
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 5 - 170 m (Ref. 114137). Subtropical, preferred 17°C (Ref. 107945); 35°S - 47°S, 46°W - 176°W
Southwest Pacific: Endemic to New Zealand, from Kawau Island down to Stewart Island and east to Chatham Island.
Length at first maturity / Size / Weight / Age
Maturity: Lm 6.0, range 5 - 5.9 cm Max length : 14.0 cm SL male/unsexed; (Ref. )
Minimum depth range from Ref. 114139. Found in soft sediments. Juveniles are preyed upon by sea stars, gastropods, octopus, snapper, and large rays (Ref. 1244). Feeds on phytoplankton (Ref. 114780). Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam.
SAUP Database. 2006. (Ref. 356)
IUCN Red List Status (Ref. 120744)
CITES status (Ref. 108899)
Threat to humans
FAO(fisheries: production) | FishSource | Sea Around Us
Estimates of some properties based on models
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
): 8.4 - 15.9, mean 13.1 (based on 64 cells).
Prior r = 0.51, 95% CL = 0.34 - 0.76, Based on 5 stock assessments.
Low vulnerability (10 of 100)